517970887 has 8 divisors (see below), whose sum is σ = 594106016. Its totient is φ = 442370592.

The previous prime is 517970839. The next prime is 517970911. The reversal of 517970887 is 788079715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 517970887 - 2⁷ = 517970759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517970087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131628 + ... + 135505.

It is an arithmetic number, because the mean of its divisors is an integer number (74263252).

Almost surely, 2^517970887 is an apocalyptic number.

517970887 is a deficient number, since it is larger than the sum of its proper divisors (76135129).

517970887 is a wasteful number, since it uses less digits than its factorization.

517970887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267417.

The product of its (nonzero) digits is 987840, while the sum is 52.

The square root of 517970887 is about 22758.9737686039. The cubic root of 517970887 is about 803.0978258395.

The spelling of 517970887 in words is "five hundred seventeen million, nine hundred seventy thousand, eight hundred eighty-seven".